Sieve clamping and adjusting device for grain cleaning shoes



A. B. WELTY Nov. 24, 1931.

SIEVE CLAMPING AND ADJUSTING DEVICE FOR GRAIN CLEANING SHOES IIIIII lilfll IIIIII. ITIIAZ 1011,14 I'll, I'I

Filed Nov. 10, 1926 Patented Nov. 24, 1931 UNITED STATES rarsnr OFFICE;

ALBERT B. WELTY, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTERNATIONAL HARVESTER COMPANY, A CORPORATION OF NEYV JERSEY J SIEVE CLAMPING AND ADJUSTING DEVICE FOR GRAIN CLEANING SHOES Application filed November 10, 1926. Serial No. 147,441.

said bolt having a threaded end 19. The bolt 1 This invention is in the art of threshers, and particularly relates to an adjustable clamping means for supporting a sieve in a grain cleaning shoe.

It is desirable in threshers that easy and quick adjustments of the sieve in a cleaning shoe be made possible, even when the thresher is in operation.

The primary objects of this invention accordingly are to provide an improved adjusting means of this kind which will function when the thresher is operating and to provide such a means which will be very simple without any likelihood that the same 5 will get out of order.

To the above ends the invention consists in the matters hereinafter described, and more particularly pointed out in the appended claim.

In the accompanying drawings,

Figure 1 is a side elevational View of one end of a grain cleaning shoe, showing the improved, adjustable screen clamp;

Figure 2 is a sectional view of the same ure 1. looking in the direction of the arrows:

Figure 3 is a plan view on an enlarged scale of the improved clamp; and

Figure 4: is a view of the same structure as seen along the line if- 1 in Figure 3, looking in the direction of the arrows.

In these drawings. there has been shown fragmentarily, one end of a grain cleaning shoe 10, having a sloping bottom 11, carried on a transverse frame bar 12, as is usual in this art. The sides of the shoe are braced by brackets 13, as shown, which brackets are vertically slotted as at 14;, (the opposite sides of the shoe are identical it will be un derstood) the slots being formed with spaced, enlarged, circular cut outs 15, connected by constricted portions 16, as shown. Similarly, the sides of the shoe are formed with a registering slot 14, said slot being of a uniform width equal to the width of the constricted portions 16 of the slot 14.

From the inside of the shoe. there is pro jected laterally outwardly, through the slots 14 and 14' in each side wall of the shoe, a 50 member 17, in the form of a carriage bolt,

structure, as seen along the line 2-2 in Figis made fast in a frame 20 of a sieve or screen 21, as shown. Over the projected threaded end 19 of said bolt is threadedly fitted a second member in the form of a wing nut 22, said nut having a flat clamping surface 23, from which protrudes a circular boss 24 of a size adapting it for registration with any one of the openings 15. It should further be understood that the diameter of the shank portion of the carriage bolt 17 is such that it can be moved through the constricted portions 16 of the slot 14, and, of course, it is also movable in the slot 14.

In use it can now be seen that if it is dereadily move through the constricted portions 16 and the slot 14. By tightening'the wing nut again and registering the boss 24 in a new position in one of the portions 15, the sieve can again be securely clamped and held in adjusted position in the shoe. It will be appreciated that adjustment of the seive can be efiected while the thresher is in operation because the wing nut is arranged exteriorly of the shoe and thresher.

It is the intention to cover all such changes and modifications of this disclosed structure which do not depart from the spirit and scope of this invention, as indicated in the subjoined claim.

What is claimed as new is: V

A clamp for a member to be adjustably joined to a flat sided relatively fixed element provided with an elongated slot, a flat sided bracket lying fiatlv against the flat sided fixed element and provided with'an elongated slot in registration with the slot in the fixed element, the slot in the bracket including a series of spaced enlargements, said clamp comprising a bolt carried by the member and having its threaded end projected through said two registered slots, and a nut device on the threaded end of the bolt, said nut device including a boss to fit any selected enlargement in the slot formed in the bracket to hold the member in adjusted position relative to the fixed element.

In testimony whereof I aifix my signature.

ALBERT B. VVELTY. 

